DE2009900A1 - - Google Patents

Info

Publication number
DE2009900A1
DE2009900A1 DE19702009900 DE2009900A DE2009900A1 DE 2009900 A1 DE2009900 A1 DE 2009900A1 DE 19702009900 DE19702009900 DE 19702009900 DE 2009900 A DE2009900 A DE 2009900A DE 2009900 A1 DE2009900 A1 DE 2009900A1
Authority
DE
Germany
Prior art keywords
oscillators
control center
passive
assigned
remote station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19702009900
Other languages
German (de)
English (en)
Other versions
DE2009900C3 (de
DE2009900B2 (de
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of DE2009900A1 publication Critical patent/DE2009900A1/de
Publication of DE2009900B2 publication Critical patent/DE2009900B2/de
Application granted granted Critical
Publication of DE2009900C3 publication Critical patent/DE2009900C3/de
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q9/00Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/08Calling by using continuous AC
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems
    • G08C19/12Electric signal transmission systems in which the signal transmitted is frequency or phase of AC
    • G08C19/14Electric signal transmission systems in which the signal transmitted is frequency or phase of AC using combination of fixed frequencies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
DE19702009900 1969-03-03 1970-03-03 Fernanzeigesystem Expired DE2009900C3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1549969 1969-03-03
JP44015499A JPS5034421B1 (enExample) 1969-03-03 1969-03-03

Publications (3)

Publication Number Publication Date
DE2009900A1 true DE2009900A1 (enExample) 1970-10-22
DE2009900B2 DE2009900B2 (de) 1977-02-03
DE2009900C3 DE2009900C3 (de) 1977-09-22

Family

ID=

Also Published As

Publication number Publication date
FR2037153A1 (enExample) 1970-12-31
US3654605A (en) 1972-04-04
CH522344A (de) 1972-06-15
BE746774A (fr) 1970-08-17
JPS5034421B1 (enExample) 1975-11-08
GB1290227A (enExample) 1972-09-20
DE2009900B2 (de) 1977-02-03

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee